andrew at morphoss
May 27, 2012, 6:28 PM
Post #4 of 4
(261 views)
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On Fri, 2012-05-25 at 09:47 -0600, Scott Barker wrote:
> On Thu, May 24, 2012 at 09:36:25PM +1200, Andrew McMillan wrote:
> > On Wed, 2012-05-23 at 09:41 -0600, Scott Barker wrote:
> > > Does davical support fine-grained CardDAV permissions? I have set up a
> > > shared addressbook for staff at my workplace, and I'd like to allow them to
> > > add and modify contacts, but not delete them. I'm not sure how it happens,
> > > but periodically a large portion of the contacts are deleted. I suspect it
> > > has something to do with users "cleaning up" or "merging" their contacts,
> > > but the easiest way to prevent it is to disallow deletion of contacts. Is
> > > this possible? Thanks.
> >
> > Hi Scott,
> >
> > It is not possible to restrict permissions for a user accessing their
> > own addressbook (or calendar), but you can certainly disallow deletes
> > from a shared addressbook.
> >
> > The permission is labeled "Delete Events/Collections" in DAViCal which
> > is kind of calendar-orientated - it should probably just be labeled
> > "Delete".
>
> Thanks, Andrew, that did the trick.
>
> One odd behaviour I noticed is that even though the contact isn't deleted
> from the shared address book in davical, it remains invisible on the user's
> iPhone after they try to delete it. Making any change to the contact from
> another device seems to make the contact re-appear on the user's iPhone. In
> testing, I added a phone number to the "deleted" contact from another
> device, then removed that phone number, so the only change server-side was
> to the REV: attribute of the contact. That appears to be sufficient for the
> user's iPhone to pull the contact back down again.
I think that's probably a bug in iOS - it's likely to be a little-tested
functionality for them to have read-only access then try+fail to delete
a contact.
Once a user elsewhere makes a change the device will get notified of a
change on the next sync and will figure things out from there - sounds
like that part works anyway :-)
Cheers,
Andrew.
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